TY  - BOOK
AU  - Anjitha K
AU  - Sailaja kumari M S (Guide)
TI  - Management of calcium, magnesium and boron deficiency for enhancing yield and quality in chilli (Capsicum annuum L.) 
U1  - 631.4 
PY  - 2022///
CY  - Padanakkad
PB  - Department of Soil Science and Agricultural Chemistry, College of Agriculture
KW  - Soil Science and Agricultural Chemistry
N1  - MSc
N2  - The investigation entitled ‘Management of calcium, magnesium and boron 
deficiency for enhancing yield and quality in chilli’ was carried out at Instructional 
farm, Nileshwar, College of Agriculture Padannakkad, with an objective to develop 
nutrient management practices for mitigating calcium, magnesium and boron 
deficiency and to evaluate its effect on growth, yield and quality parameters. The field 
experiment was carried out during December 2020 to May 2021. 
The experiment was carried out with chilli variety Anugraha, in randomized 
block design with ten treatments and three replications. Treatment combinations were 
T1(KAU POP + lime (based on soil test)), T2 (T1 + 125 kg gypsum per hectare), T3 (T1
+ 80 kg magnesium sulphate per hectare), T4 (T1 + 125 kg gypsum per hectare + 80 kg 
magnesium sulphate per hectare), T5 (T1 + foliar application of borax (0.2%)), T6 (T2 + 
foliar application of borax (0.2%)), T7 (T3 + foliar application of borax (0.2%)), T8 (T4
+ foliar application of borax (0.2%)), T9 (KAU POP + dolomite (based on soil test)) 
and T10 (T9 + foliar application of borax (0.2%)). Soil application of amendments were 
done as a single dose and foliar nutrition was given four times in a 20 days interval. 
Analysis of experimental results showed that various treatments showed 
significant effect on growth characters, fruit quality parameters as well as nutrient 
content in both soil and plant, over KAU POP recommendation. Significant positive 
effect of treatments on plant root characters and total dry matter production was 
observed whereas plant height and days to 50% flowering were found to be non 
significant. Among the treatments, maximum tap root length (13.50 cm), root volume 
(23.23 cm3
), root shoot ratio (0.16) and total dry matter production (2694.65 kg ha-1
) 
were recorded in T8 (KAU POP + lime application based on soil test) +125 kg gypsum 
per hectare + 80 kg magnesium sulphate per hectare + foliar application of borax 
(0.2%). Various treatments showed significant influence on yield and yield attributes. 
Maximum fruit weight (37.16 g) and total fruit yield (4456.79 kg ha-1
) was also 
observed in T8 and in case of fruit yield, it was significantly superior to all other 
treatments. Combined application of gypsum, magnesium sulphate and borax were
effective and maximized fruit yield.
94
Soil analysis was carried out at flowering and harvest wherein, the treatments 
showed significant effect on soil pH, EC, available potassium, calcium, magnesium, 
sulphur, iron, manganese and zinc content whereas available nitrogen, phosphorus, 
copper and boron were not influenced by treatments. Addition of calcium and 
magnesium sources significantly increased available calcium and magnesium content 
in soil. Among the various treatments, the highest available calcium was recorded in T8
and was on par with T2, T6 and T4 at flowering. Highest available magnesium content 
was recorded in T9 and T10 at flowering and harvest respectively. 
Analysis of Index leaves at flowering and total plant analysis at harvest were carried
out and it was found that plant nutrient content was significantly influenced by 
treatments. Significant effect of various treatments on plant nutrients except nitrogen 
and phosphorus was observed. Foliar application of borax significantly improved boron 
content in plants. Fruit quality parameters such as capsaicin, oleoresin, ascorbic acid 
and shelf life and total nutrient content were analysed and results showed significant 
positive response to treatments. Analysis of nutrient content in fruits showed that 
primary nutrients mainly, nitrogen and potassium, secondary nutrients and 
micronutrients in fruits were significantly influenced by various treatments. The 
treatment, T8 (KAU POP + lime based on soil test) +125 kg gypsum per hectare + 80
kg magnesium sulphate per hectare + foliar application of borax (0.2%)) recorded 
highest capsaicin (0.352 %), oleoresin (11.00 %), ascorbic acid (96.83 mg 100 g-1
) and 
maximum shelf life (13.66 days) in chilli. 
The results obtained from the experiment revealed the significant influence of 
soil amendments over KAU POP recommendation and it can be concluded that 
combined application of gypsum, magnesium sulphate and borax was effective for 
increasing fruit yield and quality in chilli

UR  - https://krishikosh.egranth.ac.in/handle/1/5810208571
ER  -