#green manuring

[toadstoolgardens]

Green Manuring

Green manuring is the process of growing a crop and adding it to the soil by digging/plowing in or cutting/pulling the crop and dropping it on top. Over time the green matter will rot and worms will drag it into the soil. This improves the quality if your soil by rotting into humus, preventing soil erosion, and retaining nitrogen instead of losing it to the air like bare soil would.

Using Weeds: Annual weeds can be a green manure crop. Many annual weeds pop up after your crops have been harvested. Let them grow and chop them tight to the ground before they seed. All green manure crops should be cut or pulled at the flowering stage or earlier, when they're young and full of protein. This way they'll have enough nitrogen in them to provide for their own rotting down.

Planting Green Manure: Green manure crops can be divided into winter and summer crops, and legumes & non-legumes. Legumes make the best green manure crops because they have bacteria at their roots that take nitrogen from the air, which is added to the soil when they rot.

Grazing Rye: A wonderful winter green manuring crop. Plant it after your harvest, rake the seed in, let it grow all winter, and then dig it in during spring.

Comfrey: A great summer green manuring crop. Plant root cuttings 2 feet apart on weed-free land in the spring and let it grow. Comfrey's deep roots will give heavy yields of nitrogen rich material, phosphate, and other minerals to the soil.

Other great green manuring crops: beans & peas, clovers, lupins, vetch, alfalfa, soybeans, sunflowers, oats, buckwheat.

Seymour, John. The New Complete Book of Self-Sufficiency. DK Publishing, 2019.

[oaresearchpaper]

Effect of green manuring crops on fertilizer economy and monetary advantages of green manure – T. aman-mustard cropping pattern

Three experiments were conducted at the Agronomy farm of Sher-e-Bangla Agricultural University, Bangladesh, at 2015 to 2016 to increase cropping productivity by inclusion of green manure in existing cropping pattern, monetary advantages and fertilizer economy as well. Total productivity of different cropping pattern was evaluated in terms of rice equivalent yield (REY) and it was calculated from yield of rice combined with yield of mustard (rice equivalent yield). The highest REY (9.60 t ha-1 in 1st year) and (11.49 t ha-1 in 2nd year) was recorded from the cropping pattern; S. rostrata – T.aman – Mustard followed by C. juncea – T.aman – Mustard and S. aculeata – T.aman – Mustard respectively in 2015 and 2016. The lowest REY (6.02 t ha-1 in 1st year) and (6.98 t ha-1 in 2n year) was obtained from the cropping pattern; Fallow-T. Aman – Mustard. Inclusion of mustard during rabi season in S. rostrata (59.47% and 64.61% in 2015 and 2016 respectively) and C. juncea (41.47% and 49.14% in 2015 and 2016 respectively) increased REY that followed by V. unguiculata (45.70% and 54.15% in 2015 and 2016 respectively) and S. aculeata (40.86% and 32.0% for 2015 and 2016 respectively) compared to Fallow-T. Aman-Mustard cropping pattern. It is noted that inclusion of crops likes S. rostrata, C. juncea, S. aculeata and V. unguiculata showed higher REY than other crops as GM in GM-T. Aman-Mustard cropping pattern. The cost of production in situ green manure was lower than addition of similar quantities from external sources. This would also reduce the N requirement by 50% to obtain similar yields.

[sheeljerry-blog]

Green manuring is a process which involves growing plants in the fields by using green manures. Green manures can be obtained by green leaves and twigs collected from wastelands and fields.