Effects of irrigation, crop residue mulch and nitrogen management in maize ( Zea mays L.) on soil carbon pools in a sandy loam soil of Indo-gangetic plain region

Although corn (Zea mays L.) stalks contribute to the total quantity of organic material in soil, their direct influence on soil structural stabilization may be small. In a laboratory study 14C-labelled corn stalks were placed on the surface of, or buried at, a 5-cm depth in a sandy loam soil. The soils were incubated at 25 °C for 119 d to determine the extent of organic carbon redistribution. Approximately 70% of the buried stalk carbon and 90% of the surface stalk carbon remained in the soil after incubation. Most of the residual carbon was identifiable as stalk tissue. Less than 5% of the added carbon was intermixed with the soil. Both the lack of C redistribution in the soil and the high loss of the mineralized 14C as CO2 stress the importance of the initial distribution of added organic materials in soils. The results imply that corn stover is a poor source of soil C and that it would be best used as a surface protectant against raindrop impact. Key words: Carbon mineralization, carbon redistribution, corn stalks, soil structure

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Improving soil organic carbon pools through inclusion of summer mungbean in cereal-cereal cropping systems in Indo-Gangetic plain

Archives of Agronomy and Soil Science ◽

10.1080/03650340.2018.1451638 ◽

2018 ◽

Vol 64 (12) ◽

pp. 1690-1704 ◽

Cited By ~ 13

Author(s):

Kali Krishna Hazra ◽

Probir Kumar Ghosh ◽

Madasur Subbabhat Venkatesh ◽

Chaitanya Prasad Nath ◽

Narendra Kumar ◽

...

Keyword(s):

Organic Carbon ◽

Soil Organic Carbon ◽

Cropping Systems ◽

Carbon Pools ◽

Gangetic Plain ◽

Soil Organic Carbon Pools ◽

Indo Gangetic Plain

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Germination ecology of wrinkle grass (Ischaemum rugosum) population of Indo-Gangetic plain region

Indian Journal of Weed Science ◽

10.5958/0974-8164.2017.00099.5 ◽

2017 ◽

Vol 49 (4) ◽

pp. 385

Author(s):

Navjyot Kaur ◽

Renu Sethi ◽

Makhan S. Bhullar

Keyword(s):

Gangetic Plain ◽

Germination Ecology ◽

Plain Region ◽

Indo Gangetic Plain

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A bioassay technique to study clomazone residues in sandy loam soil

Pesticidi i fitomedicina ◽

10.2298/pif1303203g ◽

2013 ◽

Vol 28 (3) ◽

pp. 203-211 ◽

Cited By ~ 4

Author(s):

Jelena Gajic-Umiljendic ◽

Ljiljana Radivojevic ◽

Tijana Djordjevic ◽

Katarina Jovanovic-Radovanov ◽

Ljiljana Santric ◽

...

Keyword(s):

Zea Mays L ◽

Sandy Loam ◽

Residual Activity ◽

Dry Weight ◽

Sandy Loam Soil ◽

Hordeum Vulgare L ◽

Shoot Height ◽

Bioassay Test ◽

Loam Soil ◽

Bioassay Technique

A bioassay test was conducted to evaluate the sensitivity of maize, sunflower and barley to clomazone residues in sandy loam soil. Clomazone was applied at different rates from 0.12 to 12 mg a.i./kg of soil. The parameters measured 14 days after treatment were: shoot height, fresh and dry weight, and content of pigments (carotenoids, chlorophyll a and chlorophyll b). The results showed that the lowest clomazone concentration caused a significant reduction in all measured parameters for barley and sunflower shoots. Fresh weight of maize shoots was not sensitive to clomazone residual activity in soil while the other parameters were highly inhibited. Nomenclature: clomazone (2-(2-chlorbenzyl)-4,4-dimethyl-1,2-oxazolidin-3-one), maize (Zea mays L.), sunflower (Helianthus annuus L.), barley (Hordeum vulgare L.).

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The Phytotoxicity of Microencapsulated Peppermint Oil on Maize (Zea mays L.) Depending on the Type of Growth Substrate and Maize Cultivar

Agronomy ◽

10.3390/agronomy10091302 ◽

2020 ◽

Vol 10 (9) ◽

pp. 1302

Author(s):

Agnieszka Synowiec ◽

Jan Bocianowski ◽

Agnieszka Krajewska

Keyword(s):

Zea Mays ◽

Zea Mays L ◽

Sandy Loam ◽

Biomass Accumulation ◽

Mentha Piperita ◽

Silty Clay ◽

Growth Substrate ◽

Maize Roots ◽

Growth Substrates ◽

Loam Soil

Microencapsulated peppermint (Mentha × piperita L.) essential oil (MPEO) is a prospective botanical herbicide. A hypothesis was formulated that the type of growth substrate (vermiculite, silty clay loam or sandy loam soil) and the cultivar affect the phytotoxic potential of MPEO on maize (Zea mays L.). The pot experiments assessed the effect of varying doses of MPEO or maltodextrin, a carrier of microcapsules, mixed with the growth substrates, on maize’s emergence and early growth. The morphological analyses were supported by the measurements of total phenolics in the second leaf and roots. The MPEO revealed phytotoxic effects on maize in all of the growth substrates already at a low dose (36.0 g m−2), displayed by the delays of maize emergence, reduced growth, and biomass accumulation. Maltodextrin also caused significant reductions in biomass of maize roots. In conclusion, maize is susceptible to substrate-applied MPEO, the type of substrate and the cultivar of maize, can modify this effect to a limited extent.

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