No an entirely true statement. Organic manure can be applied at any time to plants.
Certain organics though, such as bone meal are not water soluble so have to be added at the time of planting.
Use of "raw" or "hot" manure (that which is not properly decomposed) can actually damage and burn young plants if not diluted.
Assuming it is well-aged cow manure compost, the standard rule is at least two inches worth, worked into the soil. Fresh manure should only be added in the fall, so it can "mellow" over the winter. Composted manure can be added at any time - and it is an excellent addition.
Manure contains essential nutrients like nitrogen, phosphorus, and potassium that are beneficial for plant growth. When added to soil, manure helps improve soil structure, provides a source of organic matter, and promotes the growth of beneficial microorganisms. This leads to increased fertility of the soil and better overall plant health.
Manure can be used as fertiliser, so it may be used when the soil needs more supplements
Phosphorus can be added to soil through the application of phosphorus-containing fertilizers. These fertilizers can be inorganic (such as superphosphate or triple superphosphate) or organic (such as bone meal or manure). The phosphorus from these sources becomes available to plants as they grow and absorb it from the soil.
Producers can get phosphorus from various sources such as fertilizers, animal manure, and organic materials like compost. Phosphorus is an essential nutrient for plant growth and is commonly added to the soil to support crop production.
Mulch is an organic mixture that is added to dirt and topsoil to promote growth. It can be made of manure or composted material. There are several different types of mulches that can be purchased from stores like Lowe's and Home Depot.
Fertilizer is a substance added to soil or plants to provide essential nutrients for growth. Manure is organic matter, such as animal waste, used as a natural fertilizer to improve soil fertility and productivity. Both are commonly used in agriculture to enhance crop yields.
Manure is added before tilling to improve soil fertility by supplying nutrients to plants. Tilling helps incorporate the manure into the soil, ensuring better distribution and availability of nutrients for plant uptake. Additionally, tilling can help break down the manure faster, making the nutrients more readily available to plants.
mixture of nitrates
may gradually replenish soil nutrients and potentially reduce the flow of agricultural pollutants to nearby water sources, according to findings by Agricultural Research Service (ARS) scientists and colleagues.
Organic matter and soil are additions that can be made to compost to improve drainage. Dark-colored, fresh-smelling, nutrient-rich compost benefits from fresh incorporations of organic matter through sprinklings of composted manure or of soil. Particularly conducive to and supportive of drainage will be loamy and sandy soil particles.
Phosphorus in the soil comes from various sources, including weathering of rocks, organic matter decomposition, and fertilizers. It can also be added to soil through processes like animal manure application or runoff from agricultural fields.