11.3.4
Objective:
- To standardize the technique of pelleting and coating for papaya, onion, carrot, China aster seeds
- To find out the effect of various pelleting /coating materials on seed germination, seedling emergence in the field
- To identify suitable chemicals, bio-fertilizers etc. to enrich the pelleted seeds and to evaluate the benefits of these materials on seed quality and crop performance for growth and yield in the field
- To determine the storage behaviour of pelleted seeds
- Studies on seed germination in fresh and old seeds of papaya
Date of Start of this programme:
1-4-2009
PI:
Dr.H.S.Yogeesha
CO PI:
Dr. K.Bhanuprakash
Dr. P. Panneerselvam
Dr. C. Vasugi
Dr. S.S. Hebbar
Achievements:
- Combination of vermi compost, cow dung and clay powders as filler materials and combination of methyl cellulose (1.0%) and polyvinyl alcohol (1.5%) as adhesive formed firm pellets with oval to round shape in onion, carrot and tomato.
- The yield/ha from pelleted onion and carrot seeds was on par with non pelleted seed but weight per bulb/root was significantly better in pelleted seed than non pelleted seed.
- Viability of bioagents was reduced drastically after 3 months of storage under ambient conditions
- Pelleted treatments with biofertilizers showed better seedling growth than just non pelleted seeds of tomato
- Carrot and tomato pelleted seeds could be stored for 6 months but onion pelleted seeds showed slight decline in germination after 5 months of storage under ambient condition.
- Soaking in GA3 for 24h markedly improved germination of fresh papaya seed under sub optimal temperature and speed of germination even under optimum temperature.