Amino acid chelated zinc on growth and yield of cumbu napier hybrid grass-CO (BN) 5

About 40% of soils from all over India and 63.2% from Tamil Nadu were deficit in Zinc. The synthesized Zn lysinate complex AAS analysis revealed 20.6% of Zn content which is used as micronutrient supplement for cumbu napier hybrid grass-CO(BN)5. The field trail was conducted by comparing the Zn sulphate and the chelated Zn on different dosage along with the recommended dose of fertilizer (75: 50: 40 kg/ha). The experiment was laid out as randomized block design with five replications. The results showed that the chelated Zn @ 4 kg ha-1 with 0.5% foliar spray 20 days after cutting showed positive influence on green fodder (137.54 ton/ha) and dry fodder yield (26.13 ton/ha) which is 51.68% and 51.58% respectively increased over the control. The growth parameters such as plant height 40.96% (264.58 cm), leaf length 23.36% (148.21 cm), leaf breadth 31.35% (4.56cm) and tillers 40% (50 No.s) responds positively towards soil and foliar application over the control. Similarly the chlorophyll content (56.99) found maximum about 25.67% over the control. One of the important fodder quality parameter crude protein content was also shows positive effect on crude protein content 8.93% and the control having 7.43%. It is concluded that both soil and foliar application of chelated Zn shows positive effect on growth and productivity of the crop when compared to other source.