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Recommendations for Usage

 

In order to obtain the quickest and most rewarding results, any use of bat guano as a fertilizer should be done only with a complete understanding of the type of ground, type of plants, climatic conditions, and the type of guano itself.  Thorough agrochemical analyses are recommended, so as to ascertain the most appropriate application procedures. 

It should be noted, however, that it is not possible to harm plants through an “overdose” of bat guano.
 

Standard Application of Bat Guano for Certain Types of Agriculture

 
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Agriculture
 type
Integrated use of guano Use of
guano alone
Dose of guano Mineral fertilizers
Rainfed rice
Fertile soils, ferrallitic 200 kg/ha Urea 43.5kg/ha
Potash:62kg/ha
600 kg/ha
Poor, strongly de-satured soils, ferrallitic 400 kg/ha Urea 87kg/ha
Potash:62kg/ha
1000 kg/ha
Irrigated Rice fields / Aquatic / Flooded / Low-lying soils / Alluvial valleys
Mineral hydromorphic soils 400 kg/ha

Urea 87kg/ha

1200 kg/ha
Organic hydromorphic soils 400/600 kg/ha

Urea 22kg/ha

600 kg/ha
Rice field
Slightly poor soils 400 kg/ha

Urea 87kg/ha
Potash 62kg/ha

1200 kg/ha
Very poor soils 600 kg/ha Urea 65kg/ha
Potash 62kg/ha
1500 kg/ha
Maize
Fertile soils or volcanic soils 400 kg/ha Urea 217 kg/ha
Potash 57kg/ha
2400 kg/ha
Poor soils ferrallitic 600 kg/ha Urea 196 kg/ha
Potash 52kg/ha
2400 kg/ha
Leguminous plants (Beans, Groundnut, Soya…) 
Low-lying soils / Alluvial valleys
Mineral soils or organic soils 400 kg/ha   400 kg/ha
"Tanety"
Fertile soils or organic soils 400 kg/ha Potash 57 kg/ha 400 kg/ha
Poor ferrallitic soils 400 kg/ha Potash 90 kg/ha 400 kg/ha
Tubers: Potatoes, Sweet potatoes, "Saonjo"
Low-lying soils/Alluvial valleys
Mineral soils 400 kg/ha Urea 87kg/ha
Potash 57kg/ha
1200 kg/ha
Organic soils 400 kg/ha Potash 57 kg/ha 400 kg/ha
Hills
Fertile / volcanic / ferrallitic poor soils 400 kg/ha Urea 174kg/ha
Potash 90kg/ha
2000/2100 kg/ha
Fodder: Wheat, Oats, Rye grass
Hills
Fairly or slightly poor soils 400 kg/ha Urea 174 kg/ha
Potash 62kg/ha
2000/2100 kg/ha
Very poor soils 400 kg/ha Urea 217kg/ha
Potash 62kg/ha
2400 kg/ha
Low-lying soils/Alluvial valley
Mineral hydromorphic soils 400 kg/ha Urea 174 kg/ha 2000/2100 kg/ha
Organic hydromorphic soils 400 kg/ha 0 400 kg/ha
Coffee: all types of soils 30g/plant Urea : 98kg/ha
Potash: 93kg/ha
400 g/plant
Fruit trees

Pineapple

Banana tree

Mango tree (saplings / fruit formation)

Apple tree (saplings / fruit formation)

Pear tree (saplings / fruit formation)

Peach tree (saplings/formation)

Strawberry  (saplings / formation of fruit)

Orange tree

Mandarin tree

Lemon tree

Letchis

1.5 kg /plant

1.5 à 2 kg /plant

0.6 à 1kg/2 à 2.5 kg /plant

0.35 kg / 0.95 kg /plant

0.25 kg / 0.75 kg /plant

0.45 Kg / 1.2 kg /plant

0.55 kg / 1.15 kg /plant

1kg /plant

0.85kg/plant

0.95kg/plant

1.5 à 2kg/plant

Vegetables
Carrots, tomatoes, leafy greens…     4 to 6  kg/are
Garden
Lawn, Grass     0.300 à 0.400 kg/m2
Flowers     0.500 kg/m2
Young trees     0.5 à 1 kg/plant
Large trees     1.5 à 2 kg/plant
Outdoor plants
Orchids, Anthurium     100 à 250 g/pot
Roses     100 à 250 g/plant
Geranium     150 à 200 g/plant
Ravintsara     1.5 à 2 kg/plant
Sugar Cane
Not irrigated 400 kg/ha Urea : 87kg/ha
Potash:157kg/ha
6700kg/ha
Irrigated 400 kg/ha Urea : 174kg/ha
Potash: 240kg/ha
10 000kg/ha
Vine 534 kg/ha à 667 kg/ha Urea :
94 à 202 kg/ha
Potash:
237 à 320 kg/ha
10 000 kg/ha
à 13 334 kg/ha
Tabac 334 kg/ha à 667 kg/ha Urea :
51 à 116 kg/ha
Potash:
290 à 390 kg/ha
10 000 kg/ha
à 13 334 kg/ha
Vanilla plant
 Saplings     0.125 à 0.250 kg/plant
Pod formation     0.250 kg/plant
 
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  • For fruit trees (including citrus), apply bat guano in each hole at the time of planting.

  • For vegetables, apply bat guano during sowing.  For tree nurseries and seed-beds, mix 20% bat guano with 80% fertile soil, prior to sowing or planting.

  • For saplings or existing crops on steep ridges, apply bat guano in a horse-shoe shape around the plant, on the edge of its drip line.  Take further steps to avoid soil erosion to ensure results.

  • In order to obtain the best results, bat guano should always be thoroughly mixed with fertile soil, no matter the soil type or crop species.  The adage holds that “organic fertilizer is best stored in the soil.”

  • In order to determine the most appropriate application method and obtain the best results, it is recommended that thorough analyses be carried out on the soil, crop, and environment where bat guano is to be applied.
 
 

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