A tractor drawn Zero Till seed- cum- fertilizer. Drill was developed and manufactured by PUNNI for sowing wheat crop after harvest of paddy crop in the conserve moisture. Also, there is low lying and water-logged areas which never get dried so it becomes difficult enable the tillage equipment to accomplish the normal tillage operations which results in delayed sowing of wheat crop or sometimes, even the sowing of crop could not be done. Sowing by conventional methods requires large number of tillage operations to prepare a fine seed bed after paddy harvesting. Generally, 6-8 or even more tillage operations are required which cost both time and money for the farmers. Moreover, shortage of time from paddy harvest to wheat sowing creates uncertainty and delay in sowing operation which results in poor crop yields. Similarly,
Several factors that influence the field emergence of seed and field plant population depends upon the quantity of seed planted, viability of seed, treatment of the seed with chemicals to kill soil micro-organisms, planting depth, type of soil, moisture content of the soil, types of seed dropping mechanism, size of cell in planting plate, level of seed in seed hopper, distribution of the seed, type of furrow opener (runner or shovel), width of furrow opener, prevention of loose soil getting under seed, uniform seed coverage, type of covering device, pressing or firming the soil around the seed, type of press wheel or device, placement of fertilizer in relation to seed at planting time, type of seed bed, time of planting in relation to season, and experience and skill of the operator. The scattering of seed results in unevenly sown hills, which require an additional work to thin or transplant later. It is generally known that the scattering is caused mainly by improper design of the metering device, seed tube and seed release height. The lesser seed release height and straight short seed tubes reduce the scattering.
Inclined cell type planter places desired quantity of seed without scattering at regular intervals within the rows. Therefore, metering devices for the cotton, maize and other bold seeded seeds holds desired quantity of seed per hill and drop them on the ground at almost equally spaced intervals.
Main features of Tractor drawn zero till seed -cum- fertilizer drill are: Timeliness in sowing 7-8 days earlier than traditional, saves 60-75 liters HSD per hectare which resulted in saving of natural resources and environment, 30-40% less infestation of weeds, saves irrigation water up to 10-15% during first irrigation, no crust formation after rains, improvement in soil structure and fertility, no lodging of crops at the time of maturity in case of heavy rains and winds and machine is simple, heavy in weight resulting in less vibration and easy to operate
Main features of seed planter cum fertilizer drill are: Seed saving and better crop production, inclined cell type seed metering plate deliver desired quantity of seed without scattering at regular intervals with in the rows, uniform seed placement, uniform and right amount of soil coverage over seed, proper pressing of soil around the seed, proper placement of fertilizer in relation to seed as recommended, pulses, maize, oil seed and other bold seeded crops are generally sown by changing inclined plates depending upon seed size, amount of seed to be dropped, row to row and plant to plant distance.