Vegetable Seed Production

ABSTRACT
Maize development through new varieties release program is a stratetgical step to support the National Self-Sufficient Food Program. Constraints increasingly reduced agricultural land, especially corn fields should be made concrete steps. Marginal and shading land use and the use of hybrid varieties of shade tolerant superior hybrids are the main alternative to solving limited land problems. Research conducted at the Experimental Station, Village of Pasir Talang, District Rancakalong Sumedang district from September 2014 to February 2015 at an altitude of 750 meters above sea level, with climate type C3 according to the
classification Oldeman using design split-plot design is repeated 2 times, factors main plot is shade 15% (Light received plant canopy 366.94 ft cd) and control; Factor of subplot is 48 genotype of DR Unpad. The objective of the study was to determine the tolerant and stable genotype of various levels of paranet shade. The results showed that based on the tolerance component values at various
paranet shading conditions indicated by MP, GMP, and STI values, the shade tolerant genotypes were M7DR3.1.4, DR4, DR7, DR8, DR9, DR10, DR, 11, DR14, DR17 , DR20, BR153, M7DR3.1.10, M7DR3.6.1, M7DR4.8.8, M7DR5.4.1, M7DR5.5.1, M7DR7.1.9, M7DR7.4.1, M7DR9.1.3, M7DR10.2.2, M7DR14.1.1, M7DR14.2.2, M7DR16 .1.1, M7DR16.6.14, M7DR16.7.1, M7DR18.2.1,M7DR18.4.1, and M7DR18.8.1; shade-sensitive genotype was DR6, DR18, M7DR1.1.3, M7DR3.1.2, M7DR72.5, M7DR7.3.2, M7DR7.4.2, M7DR14.2.1, M7DR16.5.15, M7BR153.10.2; M7BR153.11.1, G-632, G-2031, DR21, G-634, G-3075, G-20B3077, G-207 and G-622.
Keywords: corn, paranet, tolerance of shade

In this study, moisture distribution of coarse type pumpkin seed in the form of spheroid is modelled by using diffusion equation. The analysis made for natural sun drying for constant environment temperature. Simulation results were obtained by Comsol Multiphysics finite element analysis software for 0.5, 1, 2, 5, 10, 15, 20, 25, 30 and 34 hours respectively. On the other hand, average moisture content as a function of time is obtained and an exponential decay type cure with three parameters is fitted to these results. The results show that drying rate of pumpkin seed is falling with time. Simulations shows a good agreement with experimental results at the literature.