International Journal of Plant & Soil Science

A field experiment was conducted during the rainy (kharif) season of 2024 at Crop Research Centre-1 (CRC-1) of ITM University Gwalior, Madhya Pradesh, to evaluate the effect of boron and zinc on Growth and Yield of Cowpea (Vigna unguiculata L.) in Gwalior region of Madhya Pradesh. Ten treatments, viz., T₁-Control, T₂-5 kg ZnSO₄ as Basal application (BA), T₃-5 kg ZnSO₄ +0.5% ZnSO₄ as Foliar spray (FS) at 25 DAS, T₄-5kg ZnSO₄ +0.5% ZnSO₄ +0.2% Solubor as  (FS) at 45 DAS, T₅-7.5kg ZnSO₄  as (BA), T₆-7.5kg ZnSO₄ +0.5% ZnSO₄ as (FS) at 25 DAS, T₇-7.5kg ZnSO₄ +0.5% ZnSO₄ +0.2% Solubor as (FS) at 45 DAS, T₈-10 kg ZnSO₄ as (BA), T₉-10 kg ZnSO₄ +0.5% ZnSO₄ as (FS) at 25 DAS, T₁₀-10kg ZnSO₄ +0.5% ZnSO₄ +0.2% Solubor as (FS) at 45 DAS were tested in a randomized block design with 3 replications. The growth, yield attributes and yield of cowpea were significantly influenced by the different treatments. Resulted that growth parameters (viz., plant height (cm), number of branches per plant^-1, leaf area index, dry matter accumulation (g m^-2 area), yield attributes (viz., no. of pods plant^-1, pod length, no. of seeds pod^-1), yield (viz., seed (1390 kg ha^-1), biological (3475 kg ha^-1), harvest index (40.0%) increased through the basal application of  10 kg ZnSO₄ and foliar application of ZnSO₄ @ 0.5% at 25 DAS +  Solubor @ 0.2% at 45 DAS (T₁₀) while, the lowest was found in control (T₁).