Discover important aspects of green gram (mung bean) nutrition, essential nutrient requirements, and best practices for cultivation yield in agriculture.
Which essential macronutrient is most critical for green gram plants during their vegetative growth phase, supporting leafy growth and chlorophyll production?
Explanation: Nitrogen is necessary for vegetative growth and chlorophyll synthesis in green gram, especially early in development. While phosphorus helps with root and flower development, potassium aids stress tolerance and calcium is needed for cell walls but not as dominant in leaf growth.
How does green gram obtain a significant portion of its nitrogen requirement in the field?
Explanation: Green gram forms a symbiotic relationship with rhizobia bacteria, enabling it to fix atmospheric nitrogen into usable forms. It cannot absorb nitrogen directly from the air without these bacteria. While manure can supplement nitrogen, it is not the primary source, and foliar sprays are not a key source for overall nitrogen needs.
A farmer notices yellowing between leaf veins in older leaves of green gram; which micronutrient deficiency is most likely?
Explanation: Interveinal yellowing in older leaves is typical of magnesium deficiency because it is mobile and moves out of older leaves. Iron deficiency would show in younger leaves, molybdenum is needed in small amounts and is rarely deficient, and sulfur deficiencies usually appear on young leaves.
During pod development, which nutrient is primarily responsible for energy transfer processes and seed formation in green gram?
Explanation: Phosphorus is vital for energy transfer (ATP) and seed formation in legumes during reproduction. Nitrogen supports earlier growth stages, zinc and copper are required in smaller quantities and are not as central to seed energy metabolism.
When is the optimal time to apply most basal fertilizers for green gram to ensure proper early growth?
Explanation: Applying basal fertilizers at sowing ensures that essential nutrients are available for seedlings and initial establishment. Application at flowering or just before podding is too late for early growth, and after harvest has no benefit for the current crop.