Response and enrichment of green gram (Vigna radiata L.) genotypes with respect to zinc and iron application
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Date
2011
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CCSHAU
Abstract
To understand the response and enrichment of seed and straw of green gram genotypes with Zn and Fe, a
screen house experiment was conducted at CCS HAU, Hisar during the year 2010-11.The results of the study
revealed that application of Zn and Fe increased all the yield attributes i.e. branches per plant, pods per plant,
seeds per pod and seed weight significantly over control. But recommended doses of soil plus foliar application of
Zn and Fe was found better as compare to other methods of Zn application in increasing the yield attributes.
Combined application of 5.5 kg Zn ha-1 plus 0.1% Zn as foliar increased the yield of straw by 56.4% and seed
yield by 57%, which was highest as compare to rest of the treatment. Likewise, when Fe was applied @ 10 kg Fe
ha-1 plus two foliar spray of 0.1% Fe, gave the maximum straw yield of 63.2 g pot-1. But, in green gram
genotypes, highest seed yield (8.23 g pot-1) was observed where Fe was applied in soil @ 30 kg ha-1. The
maximum Zn concentration in straw and seed (5.48 and 3.5 folds over control) was achieved when combined
application of soil plus foliar was made. In case of iron a combined application of 10 kg Fe ha-1 plus foliar spray
of 0.1% Fe gave the highest Fe content in straw and seed as 1.9 folds in straw and 1.3 folds in seed of green gram
genotypes respectively. The uptake of Zn and Fe in all the green gram genotypes also increased significantly with
externally applied increased level of zinc and iron. Soil plus foliar application of both Zn and Fe increased the
seed crude protein content by 26.9 % and 26.5 % respectively over control. Green gram genotypes showed a
considerable variation among their tolerance to Zn and Fe stress condition. Under Zn stress condition, Muskaan
was the most tolerant while Basanti, Satya and MH 318 were found quite susceptible to zinc. Whereas in case of
Fe stress condition, genotypes Asha, Basanti and MH 318 were found moderately tolerant and Satya, MH 421,
MH 565 and Muskan were grouped as susceptible. Post harvest analysis of soil sample showed a significant
increase in soil available Zn and Fe content when applied as basal in soil. In correlation analysis it was found that
Zn and Fe content in seed and straw showed a positive and significant correlation with DTPA-extractable zinc and
iron. Among yield attributes, seed and straw Zn content showed a significant and positive correlation with all the
yield attributes except branches per plant. Likewise, straw iron concentration was also significantly and positively
correlated with most of the yield attributes. On the contrary, Fe concentration in seed showed a significant and
positive correlation only with seed weight.
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Keywords
Sowing, Storage, Enzymes, Developmental stages, Germinability, Proteins, Seed treatment, Irrigation, Solutes, Onions