Open Access Original Research Article

Yield Improvement and Nutrient Uptake of Little Millet (Panicum sumatrense) for Agronomic Interventions

B. Himasree, S. Hemalatha, V. Sumathi, P. Sudhakar, K. V. Nagamadhuri

International Journal of Plant & Soil Science, Page 1-9
DOI: 10.9734/ijpss/2021/v33i1730544

Field experiments were conducted during kharif, 2019 and kharif 2020 at S.V. Agricultural College Farm, Tirupati with three different times of sowing of little millet (second fortnight of June, first fortnight of July and second fortnight of July) in combination with three methods of establishment (Broadcasting, Sowing at 30 cm × 10 cm and transplanting 20 days old seedlings) and three nitrogen levels (20 kg N ha-1, 30 kg N ha-1 and 40 kg N ha-1). The results of the experiment revealed that among the three times of sowing, second fortnight of June sowings recorded higher grain yield, straw yield and nutrient uptake of little millet while lower values of these were obtained with July second fortnight sown crop during both the years of study. Transplanted little millet resulted in superior grain yield, straw yield and nutrient uptake compared to broadcasting and sowing at 30 cm × 10 cm. Maximum values of grain yield, straw yield and nutrient uptake were observed with application of 40 kg N ha-1 while minimum values of these parameters were obtained with application of 20 kg N ha-1. Transplanting little millet during second fortnight of June along with the application of 40 kg N ha-1 achieved higher grain and straw yield besides nutrient uptake by grain.

Open Access Original Research Article

Impact of Agroforestry Systems on Mineral Fertility of Soils under Cocoa Trees in Toumodi, Côte D'ivoire

N'ganzoua Kouame Rene, Kouame Amany Guillaume, Voui Bi Bianuvrin Noel Boue, Bakayoko Sidiky

International Journal of Plant & Soil Science, Page 10-22
DOI: 10.9734/ijpss/2021/v33i1730545

Aims: To evaluate the impact of different agroforestry systems on the mineral fertility of soils under cocoa trees.

Place and duration of study: The experiment was conducted in the field from June to August 2020 in three types of cocoa-based agroforestry systems identified in Toumodi (Côte d'Ivoire) between the northern latitudes 6°19'37 and 6°34'51 and the western longitudes 5°19'58 and 5°20'02. in the forest-savanna transition zone

Methodology: Agroforestry systems define a method of setting up plantations associating various trees with cocoa trees. The choice of cocoa plantations was guided by the density of trees associated with cocoa trees defining a typology of agroforests (simple, mixed or complex). Thus, in each agroforestry system considered, three delimited plots of 100 m2 were randomly placed to make a floristic inventory of the species encountered and each time to take elementary soil samples in the first horizons at 0-20 cm and 20 - 40 cm depth to constitute the composite samples for chemical analyses in the laboratory.

Results: The study identified and recorded floristically, 17 families (Anacardiaceae, Apocynaceae, Arecaceae, Bombacaceae, Caricaceae, Combretaceae, Euphorbiaceae, Invingiaceae, Lauraceae, Meliaceae, Mimosaceae, Moraceae, Musaceae, Myristicaceae, Rutaceae, Sterculiaceae, Verbenaceae) distributed in 27 local plant species of which 55.55% of the species and a density of 55 trees/hectare in SAGS, 70.37% of the species and a density of 155.33 trees/hectare in MAGS and 81.40% of the species 224.33 trees/hectare in CAGS. These arboricultural species introduced or maintained in the plantations are generally species with shade, food, economic or medicinal interests. In terms of the chemical fertility generated, it appears that the contents of major elements and trace elements, as well as the clay-humus complex of the soils under cocoa trees were globally satisfactory and more important in the superficial horizons at a depth of 0-20 cm than in the underlying horizon of 20-40 cm, whatever the type of agroforestry system considered, but much more so in MAGS than in CAGS and SAGS in decreasing order. The different positive (R=0.80) or negative (R=-0.80) correlations established between the mineral elements in the surface horizons contribute to enrich the soil by synergistic or antagonistic effects in the agroforestry systems of Toumodi, Côte d'Ivoire.

Conclusion: The study showed that each forest agroforestry system has distinct characteristics that can be summarized mainly by its floristic diversity and density of associated trees. They are all not only preservers of a certain level of biodiversity and chemical fertility of the soils under cocoa trees, but much more so at 0-20cm than at 20-40cm. However, AGM would be more likely to improve production in a sustainable way by its capacity to establish a nutritional balance in the soil. It can be recommended during the establishment of cocoa plantations in Côte d'Ivoire.

Open Access Original Research Article

Assessment of Genetic Diversity in Morphological Traits of Mango Genotypes Using D2 Statistics

Swosti S. Das, K. Kishore, D. Lenka, D. K. Dash, K. C. Samal, D. Samant, C. M. Panda, S. C. Sahoo, S. N. Dash

International Journal of Plant & Soil Science, Page 31-42
DOI: 10.9734/ijpss/2021/v33i1730547

An experiment was conducted during 2018-2020 to study the genetic diversity in 24 morphological traits using D2 statistics in mango genotypes of eastern tropical region of India. Present study reveals that the clustering pattern based on D2 statistics grouped 40 genotypes of mango into 7 clusters, out of which cluster VI (7397.45) shows the highest intracluster value followed by cluster III (5346.99) and cluster V (4130.4), indicating considerable genetic divergence among the accessions of this cluster. While maximum inter- cluster distance was observed between the cluster VI and VII (300180) followed by cluster II and VI (289267.7) and cluster I and VI (214380.5) indicated that the accessions belonging to these groups were genetically most diverse and can be used as a parent in hybridization programme. Wide range of genetic diversity observed among cluster VI and cluster VII, can either be utilized for breeding programmes for genetic improvement in mango or directly adopted as a variety. Fruit yield exhibited significant contribution towards the genetic divergence (60.77%) followed by fruit weight (26.79%), stone percentage (4.74%), peel percentage (2.31%) and pulp percentage (2.05%).

Open Access Original Research Article

Influence of Tillage and Weed Management Practices on Yield and Nutrient Uptake of Maize

M. Samrat, M. Madhavi, T. Ram Prakashand Prathiba

International Journal of Plant & Soil Science, Page 43-50
DOI: 10.9734/ijpss/2021/v33i1730548

A field experiment entitled ‘Influence of tillage and weed management practices on yield and nutrient uptake of maize’ was conducted during Rabi-2018 at all India coordinated research project on Weed Management, College of Agriculture, Rajendranagar, Professor Jayashankar Telangana State Agricultural University, Hyderabad to study the effect of different tillage and weed management practices on nutrient uptake of maize. The soil of the experimental field was sandy clay loam in texture with moderately alkaline pH, low in available nitrogen, medium in available P and high in available K. The field experiment was laid out in split plot design with (five tillage practices) in main plots and (three weed management practices) in sub plots. The results revealed that highest total nitrogen uptake was recorded with conventional tillage (Transplanted rice) – zero tillage (maize) and it is on par with conventional tillage (transplanted rice) – conventional tillage (maize) treatments. The highest total phosphorus and total potassium uptake was recorded with conventional tillage (transplanted) – conventional tillage (maize) and it was on par with conventional tillage (Transplanted) – zero tillage (maize). Integrated weed management was found to be significantly superior with nutrient uptake followed by chemical weed management.

Open Access Original Research Article

Study of Genetic Diversity for Selected Genotypes in Rice

Ch Sai Nayan Raju, Gabrial M. Lal, Ch. Damodar Raju

International Journal of Plant & Soil Science, Page 51-59
DOI: 10.9734/ijpss/2021/v33i1730549

The present investigation was undertaken to study the 54 rice genotypes to estimate the diversity, among selected rice genotypes for yield and its component characters. The experiment was carried out during Kharif, 2020, in a randomized block design with three replications at the Indian Institute of Rice Research, Rajendranagar, Hyderabad voluntary center (Kampasagar), in Telangana State. The data was collected on characters viz and salt-tolerant score 0-9 scale. The 54 genotypes of rice were grouped into twelve clusters. Clusters with their genotypes are presented in. Cluster I had 15 genotypes, Cluster II had 13 genotypes, whereas Cluster III had 4 genotypes Cluster IV, V had 4 genotypes and cluster VI had 6 genotypes cluster VII had 1 genotype cluster VIII had three genotypes cluster Ⅸ, Ⅹ, Ⅺ had 1 genotypes cluster Ⅻ had 3 genotypes Highest inter-cluster distance was exhibited between clusters VIII and Ⅺ. and lowest cluster divergence found between the clusters Ⅳ and VII Greater the distance, wider the genetic diversity among the genotypes of those clusters. For high heterotic recombinants performing genotypes would be used as parents in the recombination breeding program. 

Open Access Original Research Article

Nutrient Concentration, Uptake and Protein Content in Chickpea (Cicer arietinum L.) under Various Integrated Nutrient Management Practices in Central India

Sumit Mukati, Y. M. Kool, Deepak Thakur, Deepak Singune

International Journal of Plant & Soil Science, Page 23-30
DOI: 10.9734/ijpss/2021/v33i1730546

Present field experiment was conducted at farmer’s field in Ringondiya village, Madhya Pradesh during rabi season 2018-19 to study the effect of integrated nutrient management practices on performance of chickpea, basic soil properties and nutrient availability. The nutrient concentration, uptake and protein content of chickpea (cv. JG-322) was evaluated under seven treatments viz., T1-Control, T2-100% N:P:K (20:50:20), T3-50% N:P:K + FYM @5 t ha-1, T4-50% N:P:K + vermicompost @2 t ha-1, T5-50% N:P:K + PSB @4 kg ha-1, T6-50% N:P:K + FYM @5 t ha-1 + PSB @4 kg ha-1 and T7-50% N:P:K + vermicompost @2 t ha-1 +PSB @4 kg ha-1 replicated thrice in a randomized block design. The N, P, K and S concentration in seed and straw, nutrient removal by seed, straw and total and protein content at harvest stage were determined. The results revealed that the integrated nutrient management practice significantly improved the nutrient concentration, uptake and quality of chickpea.