Open Access Original Research Article

Effect of Combined Application of Nitrogen and Phosphorus on the Yield of Sesame

Syed Arvin Hassan, Md. Ehsanul Haq, Montasir Ahmed, Md. Masfiqur Rahman, Alok Kumar Paul

International Journal of Plant & Soil Science, Page 1-6
DOI: 10.9734/IJPSS/2018/44830

The experiment was conducted at the Research farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, from February 2014 to June 2014. BARI Til-3 variety developed by Bangladesh Agricultural Research Institute (BARI), Gazipur. This experiment consisted of two factors; Factor-A: four levels of nitrogen viz. (i) N0 (Control), (ii) N1 (80 kg ha-1), (iii) N(100 kg ha-1) and (iv) N3 (120 kg ha-1) and Factor B: four levels of phosphorus viz. (i) P0 (Control), (ii) P1 (20 kg ha-1), (iii) P2 (30 kg ha-1) and (iv) P(40 kg ha-1). The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. Data were recorded on different parameters such as the number of capsules plant-1, number of seeds capsule-1, the weight of 1000 seeds, seed yield ha-1 and stover yield ha-1. The study reveals that a combination of different levels of nitrogen and phosphorous have a significant influence on the yield of sesame. Highest seed yield ha-1 of sesame (1652 kg) and highest harvest index of sesame (37.33%) were recorded from N3P2 (120 kg N ha-1with 30 kg P2O5 ha-1). Therefore, the results suggest that the combined use of 120 kg N ha-1 and 30 kg P2O5ha-1 gave the highest yield of sesame.

Open Access Original Research Article

Effectiveness of Micronutrients and Seed Coating Polymer Application on Seed Yield and Yield Attributing Parameters of Pigeonpea (Cajanus cajan L.)

Mallikarjun G. Handiganoor, S. B. Patil, S. N. Vasudevan

International Journal of Plant & Soil Science, Page 1-8
DOI: 10.9734/IJPSS/2018/42985

Aims: To study the Effectiveness of Micronutrients and Seed coating polymer application on seed yield and yield attributing parameters of pigeonpea (Cajanus cajan L.)

Place of Study: Field experiment was conducted during kharif 2014 at Main Agricultural Research Station, College of Agriculture, University of Agricultural Sciences, Raichur.

Methodology: The different micronutrients viz., Potassium molybdate (2 or 4 ml per kg of seed), ZnSO4 (2, 4 ml per kg of seed) and boron (2, 4 ml per kg of seed) as per the treatment either individually or in combination were coated with polymer at the rate of 6 ml per kg of seed using rotary seed coating machine, such coated seeds were properly dried under shade. after imposition of treatments, the seeds before sowing were treated with Rhizobium and Trichoderma harizianum culture. In addition, two foliar sprays as per the treatments either individually or in combination at an interval of 10 days during flowering stage (75 and 85 DAS) were given [Potassium molybdate (0.1%), (Zinc sulphate (0.5 %) in EDTA form, Borax (0.2 %)]. Various observations on seed yield and yield attributing parameters were recorded, analysed statistically to study the effectiveness of Micronutrients and Seed coating polymer application on seed yield and yield attributing parameters of pigeonpea (Cajanus cajan L.).

Results: Seed coating polymer (@ 6 ml/kg) of pigeonpea seeds with the combination of potassium molybdate + ZnSO4 + boron (each @ 2g / kg) of seed along with two foliar sprays of potassium molybdate (0.1 %) + zinc sulphate (0.5 %) in EDTA form + borax (0.2 %) at an interval of 10 days during flowering stage (75 and 85 DAS) recorded significantly maximum number of pods per plant (193.0), maximum number of seeds per pod (3.67), higher seed yield per plant (62.80 g) and finally, highest seed yield (16.30 q) per hectare as compared to control.

Conclusion: Micronutrients (viz., Potassium molybdate, ZnSO4, boron) and seed coating polymer at optimum doses can stimulate the physiological functions, resulting in early germination, improved seedling vigour with better stand establishment lead to increased productivity of pigeonpea. Hence, It could be advocated for the better establishment of seedlings and higher seed yield.

Open Access Original Research Article

Soil Survey Analysis Using Terrain Ruggedness and Normalized Difference Vegetation Index in Wafongo-Yola Terrain, Northeast Nigeria

I. S. Myina, S. A. Gisilanbe, H. J. Philip

International Journal of Plant & Soil Science, Page 1-8
DOI: 10.9734/IJPSS/2018/38026

This study was aimed at soil survey analysis using terrain ruggedness and normalized difference vegetation index (NDVI) of Wafongo-Yola Terrain, Northeast Nigeria to investigate and characterize geographic bodies such as vegetation, soils and terrain which plays an important role in evaluating soils conditions for agricultural production. In agricultural, a regional reconnaissance soil survey is usually carried out to identify soils that may support agriculture. These surveys are hectic, time consuming, laborious and cost a fortune. Many of the land users in the Northeast of Nigeria are middle class to poor farmers who might not invest in such an expensive and time-consuming venture. The cost of such surveys are high, time consuming and laborious. In tackling these problems, a cost-effective remedy is recommended through the use of remote sensing data and analysis. The Terrain Ruggedness Analysis of the top-left and some portions of the top-right quadrant at a higher level of abstraction appeared homogeneously leveled. However, areas were the terrain is rough and higher levels might need management practices to control erosion hazards.

Open Access Original Research Article

Effect of Molybdenum Enzyme Activity of Green Gram (Vigna radiata) Grown in Low Land Acid Soils of Pudukottai Region of Tamil Nadu

J. Karpagam, Rajesh .

International Journal of Plant & Soil Science, Page 1-10
DOI: 10.9734/IJPSS/2018/44298

The role of molybdenum (Mo) in greengram in regulating the activities of enzymes such as nitrate reductase (NR) and glutamine synthetase (GS) in particular to nitrogen assimilation was investigated in acid soils of  Semi-arid Tropics (SAT) of Tamil Nadu. Incubation studies were taken up with two sources of molybdenum namely sodium molybdate (Na2MoO4) and ammonium molybdate ((NH4)6Mo7O24) in which sodium molybdate proved to be a better performer and recommended as Mo fertiliser in SAT acid soils.  Application of Mo increases root, shoot length and biomass. It also increases the number of nodules and rhizobium population in green gram. In particular to microbial aspect the rhizobium population count serial dilution technique was followed. The anatomy of the nodule was imaged using high-resolution imaging Scanning Electron Microscope (FEI SEM Quanta 250, Netherlands).

Open Access Original Research Article

Prohexadione-Calcium and Nitrogen Topdressing Fertilisation on Productive Performance of Maize with Late Sowing

Magaiver Gindri Pinheiro, Clovis Arruda Souza, João Francisco Costa Carneiro Junior, Elijanara Raissa da Silva, Rodrigo Kandler

International Journal of Plant & Soil Science, Page 1-10
DOI: 10.9734/IJPSS/2018/45254

Background: The growing use of nitrogen topdressing fertilisation, combined with late sowing of maize crops, causes greater sensitivity to lodging and breaking of plant stems, and poses risks to yield and grain quality. Thus, plant growth retardants are currently an option to mitigate losses resulting from adverse effects.

Aims: The objective of this work was to evaluate the influence of using the plant growth retardant prohexadione-calcium (Pro.Ca) in response to application of different nitrogen levels on morphometric and productive characteristics of maize after late sowing.

Study Design: The experiment used a randomized block design (RBD) with four replications.

Place and Duration of Study: The field research was conducted at Lages, Santa Catarina State, Brazil, in Santa Catarina State University farm (27° 52’S; 50° 18’E and 930 m elevation), from February to June of 2017.

Methodology: The treatments were composed of two levels of nitrogen: 135 and 270 kg N ha-1, and three doses of the plant growth retardant Pro.Ca: 0, 100 and 200 g a.i. ha-1.

Results: The results showed that the tested nitrogen levels significantly affected (P = .05) ear height and plant height while number of grains per spike, stem diameter, thousand-grain weight and final yield were not affected (P > .05). The 135 kg of N ha-1 (100% level) show better results for agronomic traits of maize. The plant growth retardant Pro.Ca applied on maize plants at V12 stage at a 100 g a.i. ha-1 lead to a decrease in 8.9% and 5.3% in plant and ear height, respectively, which point to its use with high level of nitrogen topdressing fertilisation associated with Pro.Ca to avoid excessive vegetative growth in plant and ear height, maintaining the yield component number of grains per ear and final yield.

Conclusion: The recommended dose of nitrogen (135 kg ha-1) topdressing a V4 stage are adequately for achieve higher grain yield and plant height at late sowing; but Pro.Ca (100 g a.i. ha-1, applied at V12 stage) can effectively retard maize plant growth, which results in shorter plants with lower ear height, without affecting grain yield; which helps to minimise the occurrence of breaking and lodging of the stem.