Effects of liming by different calcium sources on yield and seed quality of groundnut
1993
Srisuda Thippayarugs | Taksina Sansaywichai | Direk Naranatakon (Department of Agriculture, Bangkok (Thailand). Field Crops Research Inst. Khon Kaen Field Crops Research Center)
Two field experiments were conducted at Kumpawapee, Udornthani and Phurau, Loei. The exchangeable Ca were 52-65 and 72-92 ppm, in Udornthani and Loei, respectively. In the field experiment at Khumpawapee, the high levels of exchangeable Ca were obtained with the application of seashell lime and slaked lime (289 and 244 ppm, respectively) at 30 days after sowing. Liming changed soil pH from 5.3 to 6.1-7.1. There were no significant differences among different sources of liming on kernel yield, shelling percentage and 100 seed weight but these parameters were lower in the unliming treatment, i.e., kernel yield of 200-313 vs 88 kg/ha, shelling percentage of 56-65 vs 43 percent and 100 seeds weight of 36-40 vs 32 g. There were high incidences of black plumule and hollow heart seeds of both liming and unliming treatments leading to low percentage of normal seedlings (less than 50 percent). At Phurua, no effects of liming on seed yield, shelling percentage and 100 seeds weight were observed but germination test showed the effect of liming on normal seedling percentage which was lower in the unliming treatment. Soil analysis showed that liming changed the amount of exchangeable Ca from 93 to 85-178 ppm and no difference in soil pH was observed.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by Kasetsart University