Diseases and Management of Crops under Protected Cultivation

(Diseases and Management of Crops under Protected Cultivation)
fungicide alone or in combination with other fungicides/ bio agents were found effective.
Among the fungicides seed treatment with Bavistin + Thiram (1:2), vitavax + Thiram (1:2),
vitavax, Bavistin, Bayleton, Bio agent Gliocladium virens + Vitavax and Pseudomonas
fluorescence) decreased the seedling mortality, improved germ inability, plant stand and yield.
‣ Eleven thousand germplasm lines/ breeding populations F 2 ,
F 3, F 4 and F 5 generations were screened. Many germplasm/
accessions were found resistant/ tolerant to Botrytis gray
mould viz; ICC 1069, ICC 10302, ICCL 87322, ICC 1599, -
15980, - 8529, ICCV 88510, E100Y (M) BG 256, BG261,
H86-73, IGCP 6 and GNG 146.
‣ Lentil entries evaluated under sick plot for wilt/root rot/ collar
rot diseases. The following lines were found promising viz;
LL 383, PL 81-17, LH 54-8, DPL-58, DPL 14, Jawahar Massor- 3, DPL 112, IPL-114, L 4147
and Pant L 639.
‣ The promising germplasm lines/ cultivars are as follows: DPL 62, PL-406, L 4076, TL 717, E
153, IPL 101, IPL 105, PL- 639, LH 84-8, and Precoz .
‣ The field pea lines were found promising JP 141, Pant P-5, KFPD 24 (swati), HUDP 15, KFPD-
2, HFP-4, P1361, EC-1, P-632, P 108-1, KPMR 444, KF 9412, DPR 48, T-10, KPMRD348,
DDR13, IM9102, KFP 141 and KPMR 467 against powdery mildew and JP 141, Pant P-5, P
10, FP 141, KDMRD 384, HUDP-9, HUP-2 and T-10 were found promising against rust
disease.
‣ Mid-September planting or early October planting of rapeseed-mustard has been found to
escape from Alternaria blight (Alternaria brassicae) downy mildew (Peronospora parasitica)
and white rust (Albugo candida) diseases as against mid and late October planting. In general
high occurrence of the floral infection (staghead phase) of white rust and downy mildew during
flowering period has been found to be associated with reduced period, i.e. 2-6 hours, of bright
sunshine/day concomitant with the mean maximum temperature of 21-25 0 C, the mean
minimum temperature of 6-10 0 C and higher total rainfall up to 166 mm. Bright sunshine hours
/day has a significant negative correlation whereas total rainfall has a significant positive
correlation with staghead development.
‣ All the three important foliar diseases of rapeseed-mustard could be effectively controlled by
following integrated package of balanced N 100 P 40 K 40 application, early October sowing and
treating the seed with Apron 35 SD @ 6g kg -1 seed followed by spray of mixture of metalaxyl +
mancozeb (i.e Ridomil MZ 72 WP @ 0.25%) at flowering stage and by spray of mancozeb or
iprodione @ 0.2% at pod formation stage. In situations where Sclerotinia stem rot and / or
powdery mildew appeared to be important in a particular crop season, a spray of mixture of
carbendazim (0.05%) + mancozeb (0.2%) was found to give excellent cost effective control of
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