Cac. Crusciol et al., Productiveness and yield components in dry season peanut as affected by planting time and calcium fertilization, PESQ AGROP, 35(8), 2000, pp. 1549-1558
The effect of Ca fertilization and sowing time on yield components and pean
ut pod yield in the dry season was studied. The experiment was conducted un
der field conditions in a Dark-Red Latosol, loamy texture, in Selviria, MS,
Brazil. Four sowing times (Jan. 21, Feb. 4, Feb. 18, and Mar. 4) were comb
ined with four calcium levels (0, 45, 90 and 135 kg ha(-1) of Ca), applied
at the sowing time, into the furrows, utilizing dolomite limestone with PRN
T 90.1% (21% of CaO and 18% of MgO). The number of pods per plant, number o
f grains per pod and per plant, 100 grains weight, hulled grains yield and
peanut pod yield were determined. It is concluded that: 1) as the sowing is
delayed, a water stress may occur in the growing period, and in the reprod
uctive period, reducing the dry-season peanut crop productiveness; 2) there
are good yields if planting is accomplished at the beginning of February;
3) the response for Ca fertilization is low in soils with high Ca level and
medium basis saturation, specially when water conditions are also a limiti
ng factor during dry season crop; 4) lime applied at the sowing time into t
he furrows is recommended.